1. Bluetooth specification: bluetooth V4.1 ; Support protocol Headset  Hands-free  A2DP  Avrcp;

2. Transmission scope: 10m, Transmission frequency: 2.4GHz ; 

3. charging voltage:DC 5V, Charging time about 1.5 hours;

4. capacity: 30mAH, size: 23*19*10mm;

5. talk time: over 3.5 hours; music time: over 3.5 hours; standby time: over 55 hours, weight: 4g;

6. Electric quantity display <  support apple  iphone and partial Android mobile phones>; 

7.Dynamic and mini appearance design, small body, piano baking varnish, being elegant, attractive and cool.